Application to vary condition 2 (approved plans) and removal of conditions 4, (details of mechanical ventilation) and 6, (material samples) of planning permission ref: P092375 dated 15 June 2010 for the erection of rear and roof extensions to 20-26 Rosebery Avenue and 11 Warner Street, retention of office use (B1) on ground, mezzanine and lower ground floor levels and change of use from office use (B1) on part ground floor, first and above floors to provide an Apart Hotel (C1).
20-26, Rosebery Avenue & 11 Warner Street, London EC1R 4SX · premises record
Section 73 application to vary wording of condition 2 (approved drawings) of planning permission P092375 dated 21/03/2011 for a 59 bed apart-hotel, maintaining employment space on the ground, mezzanine and lower ground levels, incorporating previously approved roof extension and alterations/extension at the rear and to the entrances on the front elevation of the building. The Minor Amendment relates to alterations to internal layouts, alterations to the rear elevation, location of lift overrun and cycle store.
Approval of details pursuant to condition 3 (Materials) of planning permission P051436 dated 25/01/06 for refurbishment and extension of existing building including roof extension, rear extension to house, new lift and stairwell and other minor alterations to front elevation.
20-26, Rosebery Avenue, Islington, London, EC1R 4SX & 11 Warner Street, EC1R 5HA · premises record
Erection of part two, part five-storey over lower ground floor level rear extensions, plus alterations to elevations in association with provision of additional Class B1 office space and flexible Class B1/Class A1 (office/showroom) space at lower levels, plus erection of two-storey roof extension to provide nine residential units.
20-26, Rosebery Avenue and 11 Warner Street, London, EC1R 4SX · premises record
Erection of rear and roof extensions to 20-26 Rosebery Avenue and 11 Warner Street, retention of office use (B1) on ground, mezzanine and lower ground floor levels and change of use from office use (B1) on part ground floor, first and above floors to provide an Apart Hotel (C1).
20-26, Rosebery Avenue & 11 Warner Street, Islington, London, EC1 · premises record
Refurbishment and extension of existing building, including roof extension rear extension to house, new lift and stairwell and other minor alterations to front elevation.
20-26, Rosebery Avenue, Islington, London, EC1R 4SX · premises record
Application to vary condition 2 (approved plans) and removal of conditions 4, (details of mechanical ventilation) and 6, (material samples) of planning permission ref: P092375 dated 15 June 2010 for the erection of rear and roof extensions to 20-26 Rosebery Avenue and 11 Warner Street, retention of office use (B1) on ground, mezzanine and lower ground floor levels and change of use from office use (B1) on part ground floor, first and above floors to provide an Apart Hotel (C1).
20-26, Rosebery Avenue & 11 Warner Street, London EC1R 4SX · premises record
Section 73 application to vary wording of condition 2 (approved drawings) of planning permission P092375 dated 21/03/2011 for a 59 bed apart-hotel, maintaining employment space on the ground, mezzanine and lower ground levels, incorporating previously approved roof extension and alterations/extension at the rear and to the entrances on the front elevation of the building. The Minor Amendment relates to alterations to internal layouts, alterations to the rear elevation, location of lift overrun and cycle store.
Approval of details pursuant to condition 3 (Materials) of planning permission P051436 dated 25/01/06 for refurbishment and extension of existing building including roof extension, rear extension to house, new lift and stairwell and other minor alterations to front elevation.
20-26, Rosebery Avenue, Islington, London, EC1R 4SX & 11 Warner Street, EC1R 5HA · premises record
Erection of part two, part five-storey over lower ground floor level rear extensions, plus alterations to elevations in association with provision of additional Class B1 office space and flexible Class B1/Class A1 (office/showroom) space at lower levels, plus erection of two-storey roof extension to provide nine residential units.
20-26, Rosebery Avenue and 11 Warner Street, London, EC1R 4SX · premises record
Erection of rear and roof extensions to 20-26 Rosebery Avenue and 11 Warner Street, retention of office use (B1) on ground, mezzanine and lower ground floor levels and change of use from office use (B1) on part ground floor, first and above floors to provide an Apart Hotel (C1).
20-26, Rosebery Avenue & 11 Warner Street, Islington, London, EC1 · premises record
Refurbishment and extension of existing building, including roof extension rear extension to house, new lift and stairwell and other minor alterations to front elevation.
20-26, Rosebery Avenue, Islington, London, EC1R 4SX · premises record
Building-control records are not yet collected for Islington — the register is being gathered borough by borough (held so far: Lambeth, Brent, Ealing, Westminster, City and others).
Place
What affects it?
Every mapped designation touching a premises in this postcode, with how many of its 28 premises each one covers.
Designation
Coverage
Archaeological Priority Area
Summary and Definition This Archaeological Priority Area covers the Civil War Defences of the 17th century which lie within Islington. These comprise of three separate forts along the defensive line. These include the sites of Upper Pond New R · reference 77786 · covers 28 of 28 premises. Groundworks may require archaeological assessment or investigation.
Central Activities Zone
Named designation not supplied · reference CAZ00000009 · covers 28 of 28 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
Named designation not supplied · reference COA00000619 · covers 28 of 28 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Archaeological Priority Area
Summary and Definition This Archaeological Priority Area covers the Civil War Defences of the 17th century which lie within Islington. These comprise of three separate forts along the defensive line. These include the sites of Upper Pond New R · reference 77786 · covers 28 of 28 premises. Groundworks may require archaeological assessment or investigation.
Central Activities Zone
Named designation not supplied · reference CAZ00000009 · covers 28 of 28 premises. London Plan policies for the Central Activities Zone may apply.
Conservation Area
Named designation not supplied · reference COA00000619 · covers 28 of 28 premises. Demolition, alterations, trees and design are subject to additional heritage controls.
Nearby postcodes and streets
Walk to the next area — linked where the Atlas has a record for it (pilot borough only for now).
Planning precedent12 applications and 13 mapped decisions in this postcode — precedent for what has been permitted and refused here.
EnergyNo EPC records joined yet.
What is not assertedNo capacity, value or ownership claim is made at area level; those belong to individual premises records and their evidence.
Intent signals
The Developer Plan
Ownership, finance and market signals recorded at addresses in this postcode — each with date and source. Signals are evidence of change, not a prediction.
Signal
Evidence
Ageing director · 12 Jun 2026
ROSEBERY PARTNERS LLP · Mr Roger Graham Walters (78) · 20-26 Rosebery Avenue, London (EC1R 4SX) · source companies_house_psc+ccod
Ageing director · 12 Jun 2026
ROSEBERY PARTNERS LLP · Mr Roger Graham Walters (78) · 20-26 Rosebery Avenue, London (EC1R 4SX) · source companies_house_psc+ccod
Boundary: OS Postcode Unit areas (Ordnance Survey), 2026-08-14. Planning records: canonical stage2. EPC: EPC register. Premises: OS AddressBase / UPRN.
EC1R 4SX, Islington: Planning and Property History | Planning Atlas